828973385 has 4 divisors (see below), whose sum is σ = 994768068. Its totient is φ = 663178704.

The previous prime is 828973339. The next prime is 828973403. The reversal of 828973385 is 583379828.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 200618896 + 628354489 = 14164^2 + 25067^2 .

It is a cyclic number.

It is not a de Polignac number, because 828973385 - 2⁸ = 828973129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82897334 + ... + 82897343.

It is an arithmetic number, because the mean of its divisors is an integer number (248692017).

Almost surely, 2^828973385 is an apocalyptic number.

It is an amenable number.

828973385 is a deficient number, since it is larger than the sum of its proper divisors (165794683).

828973385 is a wasteful number, since it uses less digits than its factorization.

828973385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165794682.

The product of its digits is 2903040, while the sum is 53.

The square root of 828973385 is about 28791.8979054872. The cubic root of 828973385 is about 939.3920110193.

The spelling of 828973385 in words is "eight hundred twenty-eight million, nine hundred seventy-three thousand, three hundred eighty-five".